This item is made of , which is durable and comfortable for long time use. The adjustable posture corrector is easy to put on and take off. It helps to improve and fix bad posture. Whether you have a hunchback or slumped shoulders, this corrector is going to retrain your body to have a good upright posture. Features -Color: Black -Material: Sponge & & PE & Plastic -Size S: Approx. 39 x 17 x 1 cm / 15.33 x 6.68 x 0.39 inch -Size : Approx. 42 x 17 x 1 cm / 16.51 x 6.68 x 0.39 inch -Size L: Approx. 45 x 18 x 1 cm / 17.68 x 7.07 x 0.39 inch -Size XL: Approx. 48 x 18 x 1 cm / 18.86 x 7.07 x 0.39 inch - This posture corrector provides alignment to regain proper posture, which helps avoid back, neck and shoulder caused by extensive sitting. - The product is resistant to dirt, adjustable and elastic for better correction. - Improve the hunchback, the back, and adjust the pressure. - Gives you a healthy back position easily and quickly can look better and confident again. - It is a good family and friends who have a trouble with body posture problem. Package list: 1 Posture Corrector